CN205207842U - Valves the bypass switch control circuit optimizes structure - Google Patents
Valves the bypass switch control circuit optimizes structure Download PDFInfo
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- CN205207842U CN205207842U CN201520834800.3U CN201520834800U CN205207842U CN 205207842 U CN205207842 U CN 205207842U CN 201520834800 U CN201520834800 U CN 201520834800U CN 205207842 U CN205207842 U CN 205207842U
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- auxiliary contact
- closing
- relay
- circuit
- pass switch
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Abstract
The utility model discloses a valves the bypass switch control circuit optimizes structure, it includes valves interface screen and the bypass switch body, valves interface screen is including first power, the second source, the bypass switch closing relay K101 and K201, normally open auxiliary contact KA101, KB101, KA201 and KB201, and switch K1 and K2, the the bypass switch body includes first combined floodgate return circuit, second combined floodgate return circuit, separating brake normally closed auxiliary contact S11 and S12, closing coils Y1 and Y4, and the auxiliary contact K10A that normally opens of block relay correspondence is assembled to the switch, K10B, valves interface screen further including circular telegram delay relay K8 and K9 and respectively with time -delayed separation normally closed contact KA8 and KA9 that circular telegram delay relay K8 and K9 correspond. The utility model discloses a carry out time -delayed separation in the bypass switch combined floodgate return circuit and leave the the bypass switch order duration that closes a floodgate in order to shorten valves interface screen to prevent because the improper the bypass switch's who leads to of control system cooperation the closing operation of branch repeatedly.
Description
Technical field
The utility model relates to electric power O&M field, is specifically related to optimizing structure of a kind of valve group by-pass switch control loop.
Background technique
When ultra-high voltage converter station valve group emergency trip (ESOF), valve group by-pass switch shields from valve group interface " combined floodgate " orders and valve set control system is outputed " separating brake " order outputed by receiving simultaneously in some cases.Because the control command sent by two loops exists conflict, may cause by-pass switch frequent deciliter within a certain period of time, and cause sequence control operation failure, valve group cannot transfer " for subsequent use " state to, thus cannot effectively isolate.
Please refer to shown in Fig. 1, the operation of sequence control in valve set control system is realized by SEQ module, and wherein the numbering of each module adds numbering name with SP.SS represents the numbering of this step, inherits the output numbering SSO of a module.MTA represents the operation monitoring time.SC represents that this step is performed complete returning and examines position, receives SC=1, then represents that this step is executed correctly, otherwise judge this step operation failure within the MTA time.CMD represents the output command of this module, namely performs the specific operation that this module needs to realize.In Fig. 1 when sequence control proceeds to module SP760, its CMD sends the order of bypass switch opens, shields the instruction conflict of the by-pass switch that closes outputed with valve group interface.Can produce after by-pass switch receives the instruction of conflict and repeatedly divide, close a floodgate, this will valve set control system be caused to can't detect point position state that by-pass switch is in definition.Due to pulling valve group high and low pressure side tool lock demand fulfillment " by-pass switch is in a point position " this interlock condition, therefore valve group control software design down cannot perform the CMD instruction " pulling valve group high and low pressure side tool lock " that SP750 outputs, cause sequence control to operate cannot perform, affect the operation of valve group to " for subsequent use " state.
The by-pass switch combined floodgate order endurance outputed in view of hardware-in-the-loop is longer, to cause by-pass switch sequence control operation by valve group from " locking " to the process of " for subsequent use ", receive simultaneously and shield from valve group interface " separating brake " order outputed, and " combined floodgate " order that valve set control system is outputed, divide-shut brake repeatedly incited somebody to action by by-pass switch.Simultaneously due in process repeatedly deciliter, valve set control system possibly cannot detect point position signal of by-pass switch, and sequence control operation will be made to perform smoothly.
In view of there is above situation, can be optimized the by-pass switch closing circuit of valve group interface screen and by-pass switch body composition, existing by-pass switch closing circuit as shown in Figure 2, valve group interface screen comprises the first power supply, second source, by-pass switch closing relay K101, corresponding with by-pass switch closing relay K101 often opens auxiliary contact KA101 and Chang Kai auxiliary contact KB101, by-pass switch closing relay K201, corresponding with by-pass switch closing relay K201 often opens auxiliary contact KA201 and Chang Kai auxiliary contact KB201, and the K switch 2 that the K switch 1 being respectively used to the order of reception first combined floodgate is ordered with reception second combined floodgate, by-pass switch body comprises the first closing circuit, second closing circuit, separating brake normally closed auxiliary contact S11, separating brake normally closed auxiliary contact S12, closing coil Y1, closing coil Y4, and the total locking relay of switch corresponding often open auxiliary contact K10A and Chang Kai auxiliary contact K10B, form the first switching signal after K switch 1 and by-pass switch closing relay K101 connect and produce circuit, form the second switching signal after K switch 2 and by-pass switch closing relay K201 connect and produce circuit, often to open after auxiliary contact KA101 and Chang Kai auxiliary contact KA201 parallel connection again with separating brake normally closed auxiliary contact S11, closing coil Y1 and often drive auxiliary contact K10A the first combined floodgate drive circuit in series, often to open after auxiliary contact KB101 and Chang Kai auxiliary contact KB201 parallel connection again with separating brake normally closed auxiliary contact S12, closing coil Y4 and often drive auxiliary contact K10B the second combined floodgate drive circuit in series, the two ends of the first switching signal generation circuit are connected to the two ends of the first power supply, the two ends of the second switching signal generation circuit are connected to the two ends of second source, the two ends of the first combined floodgate drive circuit are connected to the two ends of the first closing circuit, the two ends of the second combined floodgate drive circuit are connected to the two ends of the second closing circuit.K101/K201 is the closing relay of by-pass switch, and when after its excitation, corresponding auxiliary contact are all closed.When by-pass switch is in open position, auxiliary contact S11 and S12 closes.The total locking relay of switch is excitation when by-pass switch operating device is without exception, often open auxiliary contact K10A, K10B of its correspondence close, therefore when by-pass switch receives the combined floodgate order 1/2 from valve group interface screen, closing circuit 1/2 conducting, make closing coil Y1/Y4 excitation, thus by-pass switch is closed.Can not automatic resetting owing to being shielded K switch 1 corresponding to the combined floodgate order outputed and K2 by valve group interface, therefore when valve set control system sequent modular outputs the instruction of "off" by-pass switch, control command produces conflict.
Model utility content
Above-mentionedly there is valve group interface in order to solve and shield the by-pass switch outputed and to close a floodgate the long-term situation of order, by optimizing by-pass switch closing circuit, ensure that by-pass switch can not receive " separating brake " and " combined floodgate " order simultaneously, thus solve by-pass switch problem repeatedly deciliter, stop the by-pass switch that software cannot receive definition simultaneously and divide a signal, and cause the hidden danger of sequential operation failure.
For achieving the above object, the technological scheme that the utility model is taked is:
Optimizing structure of a kind of valve group by-pass switch control loop, it comprises valve group interface screen and by-pass switch body, described valve group interface screen comprises the first power supply, second source, by-pass switch closing relay K101, corresponding with described by-pass switch closing relay K101 often opens auxiliary contact KA101 and Chang Kai auxiliary contact KB101, by-pass switch closing relay K201, corresponding with described by-pass switch closing relay K201 often opens auxiliary contact KA201 and Chang Kai auxiliary contact KB201, and the K switch 2 that the K switch 1 being respectively used to the order of reception first combined floodgate is ordered with reception second combined floodgate, described by-pass switch body comprises the first closing circuit, second closing circuit, separating brake normally closed auxiliary contact S11, separating brake normally closed auxiliary contact S12, closing coil Y1, closing coil Y4, and correspondence often open auxiliary contact K10A and Chang Kai auxiliary contact K10B, form the first switching signal after described K switch 1 and by-pass switch closing relay K101 connect and produce circuit, form the second switching signal after described K switch 2 and by-pass switch closing relay K201 connect and produce circuit, described often to open after auxiliary contact KA101 and Chang Kai auxiliary contact KA201 parallel connection again with separating brake normally closed auxiliary contact S11, closing coil Y1 and often drive auxiliary contact K10A the first combined floodgate drive circuit in series, described often to open after auxiliary contact KB101 and Chang Kai auxiliary contact KB201 parallel connection again with separating brake normally closed auxiliary contact S12, closing coil Y4 and often drive auxiliary contact K10B the second combined floodgate drive circuit in series, the two ends that described first switching signal produces circuit are connected to the two ends of the first power supply, the two ends that described second switching signal produces circuit are connected to the two ends of second source, the two ends of described first combined floodgate drive circuit are connected to the two ends of the first closing circuit, the two ends of described second combined floodgate drive circuit are connected to the two ends of the second closing circuit, described valve group interface screen comprises energization delay relay K8 further, energization delay relay K9 and time delay corresponding with described energization delay relay K8 and energization delay relay K9 respectively disconnects normally-closed contact KA8 and time delay disconnects normally-closed contact KA9, described energization delay relay K8 and energization delay relay K9 is serially connected with the first switching signal respectively and produces in circuit and the second switching signal generation circuit, described time delay disconnects normally-closed contact KA8 and time delay disconnection normally-closed contact KA9 is serially connected with in the first combined floodgate drive circuit and the second combined floodgate drive circuit respectively.
Compared with prior art, the utility model has the following advantages: the utility model is implemented at the scene, disconnect shortening the optimal design that the by-pass switch combined floodgate order endurance outputed by valve group interface screen by carrying out time delay at by-pass switch closing circuit, can prevent because control system coordinates repeatedly the dividing of the improper by-pass switch caused, closes a floodgate, and ensure that sequential operation normally performs, valve group is isolated effectively and quickly when fault, reduce the risk of device damage, have positive effect to guarantee extra-high voltage direct-current system safety operation.
Accompanying drawing explanation
Fig. 1 is by-pass switch control loop conflict schematic diagram;
Fig. 2 is the schematic diagram of existing by-pass switch closing circuit;
Fig. 3 is the schematic diagram that the utility model valve group by-pass switch control loop is optimized structure.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment
Please refer to shown in Fig. 3, optimizing structure of a kind of valve group by-pass switch control loop, it improves existing by-pass switch closing circuit, and existing by-pass switch closing circuit comprises valve group interface screen and by-pass switch body.Wherein:
Valve group interface screen comprise the first power supply, second source, by-pass switch closing relay K101, corresponding with by-pass switch closing relay K101 often open auxiliary contact KA101 and Chang Kai auxiliary contact KB101, by-pass switch closing relay K201, and corresponding often the opening auxiliary contact KA201 and Chang Kai auxiliary contact KB201 and be respectively used to reception first of by-pass switch closing relay K201 to close a floodgate the K switch 1 of ordering and receive second and to close a floodgate the K switch 2 of ordering.
By-pass switch body comprise the first closing circuit, the second closing circuit, separating brake normally closed auxiliary contact S11, separating brake normally closed auxiliary contact S12, closing coil Y1, closing coil Y4 and the total locking relay of switch two couples often open auxiliary contact K10A, K10B.
Its electrical connection is: form the first switching signal being connected to the first power supply after K switch 1 and by-pass switch closing relay K101 connect and produce circuit; Form the second switching signal being connected to second source after K switch 2 and by-pass switch closing relay K201 connect and produce circuit; Again with separating brake normally closed auxiliary contact S11, closing coil Y1 and often drive auxiliary contact K10A the first combined floodgate drive circuit being connected to the first closing circuit in series after often opening auxiliary contact KA101 and Chang Kai auxiliary contact KA201 parallel connection, again with separating brake normally closed auxiliary contact S12, closing coil Y4 and often drive auxiliary contact K10B the second combined floodgate drive circuit being connected to the second closing circuit in series after often opening auxiliary contact KB101 and Chang Kai auxiliary contact KB201 parallel connection.
The problem that " combined floodgate " orders and valve set control system is outputed " separating brake " order outputed may exist conflict is shielded for solving valve group interface, in the utility model preferred embodiment, produce in circuit and the second switching signal generation circuit at the first switching signal and be connected in series energization delay relay K8 and energization delay relay K9 respectively, in the first combined floodgate drive circuit and the second combined floodgate drive circuit, be serially connected with the time delay corresponding with energization delay relay K8 and energization delay relay K9 respectively disconnect normally-closed contact KA8 and time delay disconnects normally-closed contact KA9, the by-pass switch combined floodgate order endurance is outputed to realize shortening valve group interface screen.
Its working principle is: when by-pass switch is in open position, separating brake normally closed auxiliary contact S11 and separating brake normally closed auxiliary contact S12 closes, the total locking relay of the switch excitation all the time when by-pass switch operating device is without exception, what then the total locking relay of switch was corresponding often open, and auxiliary contact K10A and K10B closes, now, when by-pass switch receives the first combined floodgate order and the second combined floodgate order of shielding from valve group interface, first closing circuit and the second closing circuit conducting, simultaneously, K switch 1 and K2 close, time delay disconnects normally-closed contact KA8 and time delay disconnection normally-closed contact KA9 keeps original state namely to close, by-pass switch closing relay K101 and K201 excitation, the contact of their correspondences is all closed, make closing coil Y1/Y4 excitation, thus by-pass switch is closed, after duration T (delay time of energization delay relay K8 and energization delay relay K9), time delay disconnects normally-closed contact KA8 and time delay disconnection normally-closed contact KA9 disconnects automatically, nip off two closing circuits, thus guarantee that by-pass switch can on normal occlusion, also need to ensure when valve group execution " locking " arrives " for subsequent use " operation subsequently, valve group interface shields " combined floodgate " order outputed and disappears.
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (1)
1. the optimizing structure of a valve group by-pass switch control loop, it comprises valve group interface screen and by-pass switch body, described valve group interface screen comprises the first power supply, second source, by-pass switch closing relay K101, corresponding with described by-pass switch closing relay K101 often opens auxiliary contact KA101 and Chang Kai auxiliary contact KB101, by-pass switch closing relay K201, corresponding with described by-pass switch closing relay K201 often opens auxiliary contact KA201 and Chang Kai auxiliary contact KB201, and the K switch 2 that the K switch 1 being respectively used to the order of reception first combined floodgate is ordered with reception second combined floodgate, described by-pass switch body comprises the first closing circuit, second closing circuit, separating brake normally closed auxiliary contact S11, separating brake normally closed auxiliary contact S12, closing coil Y1, closing coil Y4, and the total locking relay of switch corresponding often open auxiliary contact K10A and Chang Kai auxiliary contact K10B, form the first switching signal after described K switch 1 and by-pass switch closing relay K101 connect and produce circuit, form the second switching signal after described K switch 2 and by-pass switch closing relay K201 connect and produce circuit, described often to open after auxiliary contact KA101 and Chang Kai auxiliary contact KA201 parallel connection again with separating brake normally closed auxiliary contact S11, closing coil Y1 and often drive auxiliary contact K10A the first combined floodgate drive circuit in series, described often to open after auxiliary contact KB101 and Chang Kai auxiliary contact KB201 parallel connection again with separating brake normally closed auxiliary contact S12, auxiliary contact K10B the second combined floodgate drive circuit in series often driven by closing coil Y4 and the total locking relay of switch, the two ends that described first switching signal produces circuit are connected to the two ends of the first power supply, the two ends that described second switching signal produces circuit are connected to the two ends of second source, the two ends of described first combined floodgate drive circuit are connected to the two ends of the first closing circuit, the two ends of described second combined floodgate drive circuit are connected to the two ends of the second closing circuit, it is characterized in that, described valve group interface screen comprises energization delay relay K8 further, energization delay relay K9 and time delay corresponding with described energization delay relay K8 and energization delay relay K9 respectively disconnects normally-closed contact KA8 and time delay disconnects normally-closed contact KA9, described energization delay relay K8 and energization delay relay K9 is serially connected with the first switching signal respectively and produces in circuit and the second switching signal generation circuit, described time delay disconnects normally-closed contact KA8 and time delay disconnection normally-closed contact KA9 is serially connected with in the first combined floodgate drive circuit and the second combined floodgate drive circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520834800.3U CN205207842U (en) | 2015-10-23 | 2015-10-23 | Valves the bypass switch control circuit optimizes structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520834800.3U CN205207842U (en) | 2015-10-23 | 2015-10-23 | Valves the bypass switch control circuit optimizes structure |
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| CN205207842U true CN205207842U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520834800.3U Active CN205207842U (en) | 2015-10-23 | 2015-10-23 | Valves the bypass switch control circuit optimizes structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017134A (en) * | 2017-04-24 | 2017-08-04 | 平高集团有限公司 | A kind of short time-delay breaker and its sub-gate circuit and operating mechanism |
| CN110137902A (en) * | 2019-06-14 | 2019-08-16 | 中国南方电网有限责任公司超高压输电公司天生桥局 | One kind prevents flexible direct current power module by-pass switch from refusing combined floodgate circuit and method |
| CN110707753A (en) * | 2019-09-23 | 2020-01-17 | 大唐陕西发电有限公司西安热电厂 | Synchronous device closing loop for three-second main connection |
-
2015
- 2015-10-23 CN CN201520834800.3U patent/CN205207842U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017134A (en) * | 2017-04-24 | 2017-08-04 | 平高集团有限公司 | A kind of short time-delay breaker and its sub-gate circuit and operating mechanism |
| CN110137902A (en) * | 2019-06-14 | 2019-08-16 | 中国南方电网有限责任公司超高压输电公司天生桥局 | One kind prevents flexible direct current power module by-pass switch from refusing combined floodgate circuit and method |
| CN110707753A (en) * | 2019-09-23 | 2020-01-17 | 大唐陕西发电有限公司西安热电厂 | Synchronous device closing loop for three-second main connection |
| CN110707753B (en) * | 2019-09-23 | 2023-06-23 | 大唐陕西发电有限公司西安热电厂 | Synchronous device closing loop for three-half main wiring |
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